Question
The following sum was answered by a grade 8 learner: \[ \begin{array}{l}5 \times 9+6 \\ \\ =\end{array} \] State if the answer is correct or incorrect. Give reasons. Also write the correct answer.
Ask by Brewer Higgins. in South Africa
Mar 12,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
The answer is incorrect. The correct calculation is \( 5 \times 9 = 45 \) and \( 45 + 6 = 51 \).
Solution
To evaluate the expression \( 5 \times 9 + 6 \), we need to follow the order of operations, which states that multiplication should be performed before addition.
1. **Calculate the multiplication:**
\[
5 \times 9 = 45
\]
2. **Now, add 6 to the result:**
\[
45 + 6 = 51
\]
Thus, the correct answer to the expression \( 5 \times 9 + 6 \) is \( 51 \).
### Conclusion:
- If the grade 8 learner provided an answer other than \( 51 \), then their answer is incorrect.
- The correct answer is \( 51 \).
Answered by UpStudy AI and reviewed by a Professional Tutor
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The Deep Dive
The answer provided by the grade 8 learner is likely incorrect if they performed the operations without adhering to the order of operations. According to the order of operations (PEMDAS/BODMAS), you should first multiply before adding. So, calculating it step-by-step, you first do \(5 \times 9 = 45\) and then add 6. Therefore, \(45 + 6 = 51\). The correct answer is 51.